Airbag control unit with part number F152 57 K30 B

What does the airbag control unit F152 57 K30 B do?

The airbag control unit F152 57 K30 B is the central control unit of the restraint system (SRS) for Mazda. It evaluates the signals from the crash sensors, decides in an accident within milliseconds on the triggering of airbags and seatbelt pretensioners, and monitors the system continuously. After an accident it stores crash data and locks itself.

Faults are reported via the airbag warning light in the instrument cluster.

Why does the control unit F152 57 K30 B fail?

With the control unit F152 57 K30 B, the most common cause is crash data stored after an accident, even if no airbag has deployed. Other causes are ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes. With this control unit, deleting the crash data is often not possible; if you would like it deleted, get in touch with Airbag24 briefly before sending it in, and Airbag24 will then check the number.

• Ageing electronic components
• Cold solder joints
• Moisture and corrosion at plug connections
• Voltage spikes, for example from a weak battery or a jump start

The entry remains in the memory even if the vehicle then drives without any irregularities.

How can you tell that the F152 57 K30 B is defective?

A defect in the control unit F152 57 K30 B shows up mainly as the airbag warning light in the instrument cluster, which stays on permanently or intermittently. Messages in the instrument cluster and the fault memory also give indications.

• Airbag warning light lights up permanently or intermittently
• Error message in the instrument cluster
• The diagnostic tool gets no connection to the control unit
• The fault memory cannot be cleared

In the event of a defect, airbags and seatbelt pretensioners may not deploy in an emergency. The warning light shows that the system has detected a fault; only reading out the fault memory shows which cause lies behind it.

Which vehicles is the F152 57 K30 B fitted in?

This list lets you check whether the control unit F152 57 K30 B belongs to your vehicle. The control unit F152 57 K30 B is fitted in these vehicles: Mazda RX-8 SE3P (2003-2009) and SE3P Facelift (2009-2012).

The vehicles for this part number are listed here:

• Mazda RX-8 SE3P (2003-2009)
• Mazda RX-8 SE3P Facelift (2009-2012)

Compare the part number on the label of the removed unit with this page. This only confirms that you have the correct unit. Have the fault memory read out beforehand as well, because only this result shows whether the control unit is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers F15257-K30C, FE01 57 K30 A.

How does the repair of the F152 57 K30 B work?

First have the fault memory read out and enclose the log, then disconnect the battery and only then remove the control unit F152 57 K30 B. Then create the repair order online and send in the well-packed unit. Processing at Airbag24, that is checking, repairing and testing, usually takes 3–4 working days.

Airbag24 checks the control unit on the test bench, replaces defective components and carries out a functional test. Your own unit is then returned to you.

If you would like the crash data deleted, get in touch with Airbag24 briefly before sending the unit in.

Our repairs come with 2 years' statutory liability for defects. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit F152 57 K30 B get to Airbag24?

You send the control unit F152 57 K30 B as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

Put the printed repair order into the parcel and pack the unit shock-proof. Make sure that it does not shift in the carton and that the packaging is completely closed.